MILAN, Italy -- Atletico Madrid struggled throughout but managed to win 1-0 at AC Milan thanks to a late Diego Costa header in the first leg of their last-16 Champions League tie on Wednesday. Custom Seattle Mariners Jerseys . Diego Costa headed in Gabis corner seven minutes from time to secure victory ahead of the return match in Madrid on March 11. "We know that at Madrid it will be another game, which will also be important and very difficult," Milan coach Clarence Seedorf said. "Atletico dont change much whether theyre playing at home or away from home. "We have time to prepare the return leg and well have more players back. Im proud of what we did tonight... I saw a lot of positive things on the pitch." Bayern Munich won 2-0 at 10-man Arsenal in the other match of the night. Both teams missed a penalty in the first half, which also saw Arsenal goalkeeper Wojciech Szczesny sent off. Milan had dominated the match with its best performance of the season, hitting the woodwork three times in an entertaining first half hour. "We are a normal team, a very humble one which tries to do as well as we can," Atletico coach Diego Simeone said. "We started better but then Milan caused us problems. "We didnt have many chances but as you know in football what matters is scoring goals and fortunately we scored a goal." Spains joint league leader was the overwhelming favourite but Milan was the superior side and had the better chances in Seedorfs first Champions League match as a manager. The Dutchman is the only player to have won the competition with three different clubs. There was more bad news on the night for Milan as star striker Mario Balotelli went off clutching his shoulder 12 minutes from time. The Italy forward will have tests on Thursday. Milan was boosted by key playmaker Kaka recovering from injury in time and the Brazilian was given the captains armband. Kaka overcame a bout of flu to play in Fridays 1-0 victory over Bologna but had to be replaced 10 minutes from time after injuring his right ankle. Stephan El Shaarawy, Valter Birsa, Robinho, Bryan Cristante and Cristian Zapata were all out with injury while Sulley Muntari and captain Riccardo Montolivo were both suspended. New signing Keisuke Honda is cup tied. Milan was the underdog after a miserable season which saw coach Massimiliano Allegri sacked at the beginning of the year. The side is ninth in the Serie A table and had been eliminated in each of its past four knockout ties against Spanish opposition. It appeared as if Milans fears were to be realized as the players struggled to get out of their own half in the opening 10 minutes. However, Milan was containing Atletico and slowly began to get into the game. Balotelli had the first real chance of the match with a 30-meter free-kick from roughly the same position that he scored a stunning goal from on Friday. But the Italy forward fired well wide of the left post. Milan went even closer four minutes later with a wickedly swerving shot from Kaka from the bottom corner of the penalty area which crashed off the crossbar. Atletico goalkeeper Thibaut Courtois -- who is on loan from Chelsea -- pulled off a stunning save shortly afterwards, fingertipping Andrea Polis header off the base of his right post after a great cross from Adel Taarabt. Tension was beginning to escalate at San Siro and a touchline brawl threatened to erupt following a poor Emiliano Insua tackle on Mattia De Scglio. The Milan defender had to be replaced by Ignazio Abate. Milan again went close on the half hour when Balotelli backeeled the ball to Kaka, whose effort scraped the top of the crossbar. Milan continued to dominate after the break and Kaka again went close with a drive narrowly past the left upright, while Michael Essien headed a corner wide. All Milans good work was to come to nothing, though, as Diego Costa headed powerfully home at the far post for his fifth goal in four Champions League matches. Milan almost snatched a draw but Adil Ramis free kick whistled wide of the left post. Denard Span Jersey . The third-ranked Lewis, a three-time winner this year on the LPGA Tour, had a 9-under 135 total at Emirates Golf Course in the Ladies European Tours season-ending tournament. Alex Colome Jersey ... maybe even more than that. Maybe all season I have to take a few blows. http://www.marinersrookiestore.com/Mariners-Guillermo-Heredia-Kids-Jersey/ . The person, speaking on condition of anonymity because of the confidential nature of the search, confirmed reports by several media outlets. The interview took place in Southern California on Monday.Russia could be banned from the Rio Olympics next month after an independent commission found evidence of state-sponsored doping in the country during the 2014 Sochi Winter Olympics. The investigation by the World Anti-Doping Agency, which was led by Canadian lawyer Richard McLaren, said Russias Ministry of Sport directed, controlled and oversaw the manipulation of urine samples provided by Russian athletes at the Sochi anti-doping laboratory with the active participation and assistance of the FSB secret service. Professor Richard McLarens WADA report on Russia and whether it operated a state-dictated doping system McLaren delivered three main findings at a press conference in Toronto on Monday - that doped samples disappeared from the anti-doping laboratory in Moscow, that they were swapped with clean samples at the laboratory for the Sochi Winter Olympics in 2014 and that these plans were directed by the Russian sports ministry. The findings have cast huge doubt on Russias participation at the Games, which start on August 5, with their track-and-field athletes already banned by the IAAF, and an IOC statement on Monday afternoon said a decision could be made as early as Tuesday on the matter. Russias participation at the Rio Olympics is in doubt after the latest WADA investigation In the immediate short term, the IOC Executive Board (EB) will convene in a telephone conference tomorrow (Tuesday) to take its first decisions, which may include provisional measures and sanctions with regard to the Olympic Games Rio 2016, it read.IOC president Thomas Bach said: The findings of the report show a shocking and unprecedented attack on the integrity of sport and on the Olympic Games. Therefore, the IOC will not hesitate to take the toughesst sanctions available against any individual or organisation implicated. Ryon Healy Jersey. Thomas Bach says the IOC will not hesitate to enforce the toughest sanctions The 57-day investigation was set up in May following an interview in the New York Times with the former director of Moscows anti-doping laboratory, Grigory Rodchenkov, in which he described an elaborate plan to ensure Russian success at Sochi 2014.Rodchenkov has been in hiding in the United States since that interview after being branded a criminal and a traitor by senior Russian figures, but McLarens findings appear to vindicate his version of events.He said his team had used forensic analysis, seized computers, studied data and performed extra tests on stored samples from the Sochi Games and other major events. The opening ceremony of the Winter Olympics in Sochi, Russia The Moscow laboratory operated, for the protection of doped Russian athletes, within a state-dictated fail-safe system, McLaren said.The Sochi Laboratory operated a unique sample-swapping methodology to enable doped Russian athletes to compete at the Winter Olympic Games, he added.UK Anti-Doping, which has been running the testing programme in Russia on WADAs behalf since the Russian anti-doping agency (RUSADA) was suspended, said the entire sporting community must unite to find new ways and a stronger commitment to ensure clean competition.We have an obligation to help safeguard clean athletes around the globe by working closely with international partners to support the development of robust anti-doping practices in countries where these are weak, said UKAD chief executive Nicole Sapstead.Everyone has a responsibility to support this process for the sake of clean and honest athletes. UK Anti-Doping chief Nicole Sapstead wants clean athletes safeguarded UK sports minister Tracey Crouch said: Professor McLarens report has exposed the extreme lengths some will go to in order to cheat.This shocking report is a wake-up call to the sporting world and I hope it will act as a catalyst for us to work even harder to protect the integrity of sport and the Olympic movement itself. Also See: Litvinov confident of ban lift Klishina: Im not a traitor ' ' '